PM Questions

[Unregistered]

Hello I am new to MP's so please forgive the dumb questions
After some reading on this forum I have a few questions.
I go to an MP and pay the room rate. I have already picked a couple of places to try
When do I ask for extras. ??
At the front desk or do I ask the girl who starts the massage and negotiate a price
Do I ask right away or wait until near the end of the massage ? In my Case 30 min Massage ended with a HJ
Or do I wait for the girl to ask ??

Thanks for the replys